Country Information

CountryUnited States
ISO CodeUS / USA
LanguageEnglish
Total Records42,605

United States uses a numeric code of 5 (or 5+4) digits (e.g. 10001). ZIP Code (5 digits) with optional ZIP+4 extension.

This database currently holds 42,605 ZIP Codes ranging from 00501 to 99929, linked to 0 building and address records. Because a single ZIP Code can cover more than one locality or delivery point, the lookup below groups addresses by code and lets you drill into the individual records.

Postal codes matter well beyond mail delivery. Couriers, e-commerce checkout forms and address autocomplete tools rely on the ZIP Code to route a parcel and to verify that the stated address matches the code. Addresses here are organised as State → County → City. The code itself is structured as ZIP Code → ZIP+4 → Delivery Point, which is postal geography and not the same as the administrative hierarchy. When you look up a code here, treat the associated name as a reference point rather than a full postal address — always confirm the street and house number with the sender or recipient before shipping.

Data source: a third-party open dataset. This is an imported reference dataset, not a live government feed; CodeReff does not independently verify each record, so codes may have changed since the snapshot was taken. Use the search box to look up a specific code, or browse the paginated table below.

United States Postcode Data

42,605 postcode found

Postal Code State County City Records
58502 North Dakota Burleigh Bismarck 1
58503 North Dakota Burleigh Bismarck 1
58504 North Dakota Burleigh Bismarck 1
58505 North Dakota Burleigh Bismarck 1
58506 North Dakota Burleigh Bismarck 1
58507 North Dakota Burleigh Bismarck 1
58520 North Dakota Morton Almont 1
58521 North Dakota Burleigh Baldwin 1
58523 North Dakota Mercer Beulah 1
58524 North Dakota Emmons Braddock 1
58528 North Dakota Sioux Cannon Ball 1
58529 North Dakota Grant Carson 1
58530 North Dakota Oliver Center 1
58531 North Dakota McLean Coleharbor 1
58532 North Dakota Burleigh Driscoll 1
58533 North Dakota Grant Elgin 1
58535 North Dakota Morton Flasher 1
58538 North Dakota Sioux Fort Yates 1
58540 North Dakota McLean Garrison 1
58541 North Dakota Mercer Golden Valley 1
58542 North Dakota Emmons Hague 1
58544 North Dakota Emmons Hazelton 1
58545 North Dakota Mercer Hazen 1
58549 North Dakota Emmons Kintyre 1
58552 North Dakota Emmons Linton 1
58554 North Dakota Morton Mandan 1
58558 North Dakota Burleigh Menoken 1
58559 North Dakota McLean Mercer 1
58560 North Dakota Burleigh Moffit 1
58561 North Dakota Logan Napoleon 1
58562 North Dakota Grant New Leipzig 1
58563 North Dakota Morton New Salem 1
58564 North Dakota Grant Raleigh 1
58565 North Dakota McLean Riverdale 1
58566 North Dakota Morton Saint Anthony 1
58568 North Dakota Sioux Selfridge 1
58569 North Dakota Grant Shields 1
58570 North Dakota Sioux Solen 1
58571 North Dakota Mercer Stanton 1
58572 North Dakota Burleigh Sterling 1
58573 North Dakota Emmons Strasburg 1
58575 North Dakota McLean Turtle Lake 1
58576 North Dakota McLean Underwood 1
58577 North Dakota McLean Washburn 1
58579 North Dakota McLean Wilton 1
58580 North Dakota Mercer Zap 1
58581 North Dakota McIntosh Zeeland 1
58601 North Dakota Stark Dickinson 1
58602 North Dakota Stark Dickinson 1
58620 North Dakota Slope Amidon 1

Postcodes by Region

Postcodes by City

Frequently Asked Questions

United States uses a numeric code of 5 (or 5+4) digits (e.g. 10001). ZIP Code (5 digits) with optional ZIP+4 extension.
Yes. United States postal codes are a plain numeric string, so a leading zero is part of the code itself. A code beginning with 0 must be written and stored with that zero — it is not the same as the same digits without it.
42,605 This database currently lists
The records are imported from a third-party open dataset, an open reference dataset. CodeReff does not independently verify each entry, so use the information as a reference rather than an official confirmation.
Enter a full or partial postal code, or a building or street name, in the search box above. You can also browse the paginated table and open any code to see its building and address records.
Information provided on CodeReff is for reference purposes only. Always verify financial and banking details with the relevant institution before use.